Jaw Crushers - Mining and ConstructionRobuSt ConStRuCtion. The jaw crusher is a single toggle jaw crusher, character- ized by attention to detail, in both design and manufacture. We.design and construction of jaw crushers,Crusher - WikipediaA crusher is a machine designed to reduce large rocks into smaller rocks, gravel, or rock dust. .. Jaw crushers are heavy duty machines and hence need to be robustly . to a much more compact design than that of the double toggle jaw crusher. . It is mainly used in mining, chemical industry, road and bridge construction,.